Navigation signal structure based on complex carrier modulation

Abstract

Signal structure design is an important part of satellite navigation system research, which directly affects navigation performance. Signal performance parameters are analyzed and performances of BPSK modulated signals and BOC modulated signals are compared. Aiming at requirements of high navigation precision and high anti-jamming ability, a new navigation signal structure based on complex carrier modulation is proposed and performances of the signal are researched with different parameters. A synchronization algorithm is put forward according to the signal characteristics, and the synchronization performance is qualitatively analyzed. Next, the applications of the complex carrier modulated signal are discussed, which include anti-jamming, navigation enhancement, power combing and so on. Simulations and analysis show that the proposed navigation signal structure based on complex carrier modulation has good navigation capabilities and anti-jamming abilities, which deserves further study. complex carrier modulation, BPSK, BOC, root mean square bandwidth PACS: 07.50.Qx1

Research and progress of Beidou satellite navigation system

“…Unlike the RDSS navigation signal structure used by Beidou-1, Beidou-2 adopts the RNSS navigation signal structure, which is the same as that of GPS and Galileo. Signal structure design is an important part of satellite navigation system, which directly affects navigation performance [10]. Tan et al [11,12] presented a kind of navigation signal structure which is suitable for China's global navigation satellite system.…”

Performance Evaluation of the New Compound-Carrier-Modulated Signal for Future Navigation Signals

“…A preliminary exploration has been conducted to confirm the feasibility of the proposal [ 21 ]. The NSCC, however, has a serious shortcoming with its high peak to average power ratio (PAPR) due to its multi-carrier structure.…”